Trig ratios Flashcards

1
Q

What is the value of Sin, cos and tan when at 0’

A
Sin = 0
Cos= 1
tan = 0
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2
Q

What is the value of Sin, cos and tan when at 30’

A
Sin = 1/2
cos= [root 3]/2
tan= 1/[root 3]
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3
Q

What is the value of Sin, cos and tan when at 45’

A
sin = [root 2]/2
cos = [root 2]/2
tan = 1
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4
Q

What is the value of Sin, cos and tan when at 60 ‘

A
sin = [root 3]/2
cos = 1/2
tan = [root 3]
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5
Q

What is the value of Sin, cos and tan when at 90’

A

sin = 1
cos = 0
tan doesn’t exist

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6
Q

How do you calculate sin x?

A

O/H

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7
Q

How do you calculate cos x?

A

A/H

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8
Q

how do you calculate tan x?

A

O/A

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9
Q

Sine/cosine =

A

Tan

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10
Q

What is the easy method for remembering?

A

for sin, 4,3,2,1,0 square root divided by 2

for cos, 0,1,2,3,4 square root divided by 2

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